Combination-lock.



H. HANFLIG.

COMBINATION LOCK.

APPLICATION FILED MAY 28 I9l7.

1,320, 1 39. Pafented I Oct. 28, 1919. E11- ILI.

HH ahi/3,12?,

@as @was prima emga nanars HANFLIG, orj oHanLEs'roWN,inas`saorrrisnrrs;v

l ooivrBInATIoN-noox.

To all whom it may concern.' y

` Be itknown that I, HRRrs HAN-mima citizen of the United States,residing at Charlestown, in theV county of Suffolk and State ofMassachusetts, have invented certain new and useful Improvements inCom.- bination-Locks, of which the following is a Y specification. Y

This invention relates to a combination lock especially adapted to beiitted to boxes formed of thin metal, but also capable of use in otherplaces. A further object of the invention is to provide a lock of thiskind which can be soldered in position,the combination beingchanged byopening the lock at the back instead of the front, the front beingsoldered in position.

The invention also consists of the novel featuresV of constructionhereinafter described, pointed out in the claim and shown in theaccompanying drawings, in which Figure 1 is an exterior View of a boxwith my lock applied thereto.`

Fig. 2 is a rear view ofthe lock mechanism, partly broken away, the backplate of the lock casing being removed.

Fig. 3 is a rear-elevation of the lock mechanism, a box top being partlyshown in section and the lock parts being in locking position.

Fig. 4 is a section on the line 4-4 of Fig. 2.

Fig. 5 is a horizontal section on the line 5 5 of Fig. 3.

In these drawings 1 designates a box on the front face of which isplaced a flanged disk 2 within the flange of which rotates a dial 3.Said dia-l carries a knob 4 and shaft 5. To the inside of the box issoldered a lock casing 6 the front plate of which carries an inwardlyextending sleeve 7 which forms both a bearing for the shaft 5 and also abearing for the tumblers toV be described hereafter.v

The casing has a removable back plate 8 secured toy studs 9 into which-screws 10 thread. A tumbler 11 is mounted on the shaft 5 and tumblers12 on the shaft sleeve i p Specification of Letters I,atent.'Patlit'edictg 28,` 1.919. Alpiication aieaivray 2s, '1917. serial No.17u86. i i

carry oppositely extending pins `17 and 18,

`thefpins l7"being the longer andpassing through the opening 13.

The combination is readily changed by shifting the plates 16 therebychanging the relative position of the pins. The tumbler 11 is of coursefast to the shaft, while the' tumblers 12 are loose on the sleeve. Onlythe Vplate 16 adl'acent the intermediate tumbler is provide with a pin18. In working the lock the pin 15 picks up the first pin 17 and the pin18 the second pin 17.

A slide 19 having slots 20 is supported in place and guided and limitedin its longitudinal movement by pins 21 carried by the front face of thecasing 6.

The top of the casing has openings 22 and to the box lid is secured anangled plate 23 having notched locking studs 24 which pass through theopenings 22 `and are engaged by flanges 25 carried by the slide 19.Engagement of these ianges with the notches of the studs locks the lidin closed position.

Pivotally mounted on a pin 26 carried by the slide 19 is an angled lever27 normally pressed downwardly by a spring 28. The tongue 30 of thelever is adapted to engage the notches 14 of the tumblers when broughtinto proper alinement. A pin 29 carried by the front of the casing is sopositioned that as the tumblers, after engaging the tongue 30 andbringing the slide 19 into locking position are turned to the right, thepin will engage and partly lift the lever o-ut of said notches.V

This permitsv free turning movement to scatter the tumblers. It willalso be noted that this lever rests on the pin 29 and immediately belowand adjacent a pin 21, and the last mentioned pin would act as a stopafter the lever had been thrown entirely out Vof the notches againstreverse movement of the lever, and of course the plate 19 to which thelever is connected. When the notches are brought into alinement againthe pin permits the lever to drop sufficiently into the notches to causesuiiicient sliding movement of the plate to bring the tongue entirelyinto the notches, Vthus permitting unlocking.

It will be noted that by constructing the lock and its casing in thismanner the combination can be changed from the back. This permits thesoldering of the front of the casing to the inside of a box of such thinmaterial that would make it practically 1mpossible to secure n place alock by the usual means of screws. At the same time I have a look whichcan be employed in places Where the usual form of combination lock isemployed.

What I claim s.:-

In a lock comprising a slide and rotatable notched tumblers, an angledlever carried by the slide and adaptedl to engage the tumtudinalmovement of the slide and lift the lever clear of the tumblers, therebypermitting their free movement prior to complete Withdrawal of the leverfrom said notches, as and for the purpose set forth.

In testimony whereof I ax my signature.

HARRIS IIANFLIG.

Copies of this patent may be obtained for ve cents each, by addressingthe "Commissioner of Patents,

Washington, D. G.

